FSQ0270RNA Datasheet PDF - Fairchild

●Description

●The FSQ0170RNA, FSQ0270RNA, FSQ0370RNA consists of an integrated current mode Pulse Width Modulator (PWM) and an avalanche-rugged 700V Sense FET. It is specifically designed for high-performance off line Switch Mode Power Supplies (SMPS) with minimal external components. The integrated PWM controller features include: a fixed-frequency generating oscillator, Under-Voltage Lockout (UVLO) protection, Leading Edge Blanking (LEB), an optimized gate turn-on/ turn-off driver, Thermal Shutdown (TSD) protection, and temperature compensated precision current sources for loop compensation and fault protection circuitry.

●Features

●„Internal Avalanche Rugged 700V SenseFET

●„Consumes only 0.8W at 230 VAC& 0.5W Load with Burst-Mode Operation

●„Precision Fixed Operating Frequency, 100kHz

●„Internal Start-up Circuit and Built-in Soft-Start

●„Pulse-by-Pulse Current Limiting and Auto-Restart Mode

●„Over-Voltage Protection (OVP), Overload Protection (OLP), Internal Thermal Shutdown Function (TSD)

●„Under-Voltage Lockout (UVLO)

●„Low Operating Current (3mA)

●„Adjustable Peak Current Limit

●Applications

●„Auxiliary Power Supply for PC and Server

●„SMPS for VCR, SVR, STB, DVD & DVCD Player, Printer, Facsimile & Scanner

●„Adapter for Camcorder